Atm I've decided to wait for traits before launching my mage thus I'm just enjoying doing some Dungeon runs or PvP with people that are around, but depending on class you can lvl to 25 on average in 80 hours now if you know where to go. People think it's harder since the last level was doubled, but I find that I went trough hell with my Confessor at that times that there was almost no gear at all and I was stuck with only 8 mana regen/sec.
That while a bunch of wild lvl 20 pwnies were protecting the best grinding places
Came out with a lvl 25 Templar and 24 Confessor.
Lvl 25 in phase II is very possible for sure, and I think if actively pursuing it, takes 3 weeks
Just need a freaking hat now to beat Kast in mana again and claim my throne
... maybe lvl 25 too